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Zamani
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Re: Building the supercharger to the engine (75 3.0V6)

Post by Zamani »

nice! The donut design is inherently better.
Dr. Alban
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Re: Building the supercharger to the engine (75 3.0V6)

Post by gtv-racer »

In the proces of making new 25.4mm torsion bars. Hope it loses the cruise ship like drive.

This should be nice for a street application.
The material is 12ChroNiMo6. We also use this in our university racecars. Stiffness is about the same. This increase in diametre should give a 150 % stiffer spring rate.

Test part for checking tollerances. I saw some wear on the old ones. The car did 275.000 km's. I increase the spline diameter at the back with 0.02mm. Upfront it is nice.

Image

The blanks:

Image

I'll post the drawings ove here for reproduction.

Damn it is quit over here 😕
KevinR
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Re: Building the supercharger to the engine (75 3.0V6)

Post by KevinR »

Definitely following this !!
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Re: Building the supercharger to the engine (75 3.0V6)

Post by gtv-racer »

Fully splined and sprayed:

Image

They are already in the car. Let's see how they drive. Have to wait till March.. the car is suspended.
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Re: Building the supercharger to the engine (75 3.0V6)

Post by gtv-racer »

With the new spring setup the car feels and drives like a modern car .Body rol is reduced a lot. Also nose diving while is braking a lot better. :lol:

Haven't drove it on the limmet yet but in fast corners it feels good. So happy the slopyness is gone!
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Zamani
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Re: Building the supercharger to the engine (75 3.0V6)

Post by Zamani »

Is this material is the same as the factory torsion bars? I’m assuming this should as stiff as other aftermarket 25.4mm bars?
Dr. Alban
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Re: Building the supercharger to the engine (75 3.0V6)

Post by gtv-racer »

It's not the same material. It is 34ChrNiMo6 steel which we use in our University race cars. How ever spring charecteristics are about the same. It should give about 150 percent increase in spring stiffness.
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